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To: epithermal
“Since the 1970’s the Magnetic North Pole has accelerated from less than 10 to more than 30 miles per year”

Yes, but considering the size of the Earth that really doesn't make for a whole lot of annual change in variation unless you are fairly to the magnetic pole. This example of the compass rose on a nautical rose shoes the annual change in variation (the difference between true north and magnetic north) as 8 minutes-a degree every 8 years. A quick check of the chart for Tampa Bay shows the rate of change there was 5 minutes a year in 2006. Puget Sound's change was 11 minutes/per year, New York's was 2 minutes, San Francisco 8 minutes, Chesapeake Bay had no annual change measured in 2010.

60 posted on 01/06/2011 10:14:20 PM PST by GATOR NAVY ("The bigger the government, the smaller the citizen." -Dennis Prager)
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To: GATOR NAVY
Yes, as long as the north and south poles stay about where they are in relation to one another then we can safely go about our business. It is interesting that this article is about changes in Florida, which is within about the most uniform area of declination on the globe:


63 posted on 01/07/2011 5:07:13 AM PST by epithermal
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